38491870 has 8 divisors (see below), whose sum is σ = 69285384. Its totient is φ = 15396744.

The previous prime is 38491867. The next prime is 38491879. The reversal of 38491870 is 7819483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38491879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924584 + ... + 1924603.

It is an arithmetic number, because the mean of its divisors is an integer number (8660673).

Almost surely, 2^38491870 is an apocalyptic number.

38491870 is a deficient number, since it is larger than the sum of its proper divisors (30793514).

38491870 is a wasteful number, since it uses less digits than its factorization.

38491870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849194.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 38491870 is about 6204.1816543360. The cubic root of 38491870 is about 337.6419010065.

The spelling of 38491870 in words is "thirty-eight million, four hundred ninety-one thousand, eight hundred seventy".